Video Editor shows SVGs as transparent image - can this be fixed?
You need to convert SVGs to a raster format (Tiff, PNG, JPG, EXR, etc) before you can load them into the VSE.

Support for SVGs is limited.

As an alternative you can load the SVGs (paths only) as curve objects into the 3D environment, and add a scene strip to the VSE. 

For more info on support for SVGs read: Why can&#39;t I import a SVG file from Adobe Illustrator or Inkscape?